What Makes Our Warranty So Dependable?

We’re pioneers in the industry with over 40 years of experience and 10,000+ issued waterproofing warranties to date. We dont just issue a document but truly provide the most reliable and time-tested waterproofing warranty available today in the GTA.
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best waterproofing services in oakville

We Are The Originals

GJ MacRae retains the highest quality waterproofing warranty in the GTA. Beware of lifetime warranty promises.

A 40+ Year History

We are a four-decade family business and no one has been waterproofing and underpinning in the GTA longer.

Truly Family Owned

GJ MacRae is truly a family owned and operated waterproofing and foundation repair company.

10,000+ Warranties

With over 10,000+ warranties issued to date no other company can match our degree of waterproofing dependability.

Our Only Specialty

This is all we do! We began in 1975 and continue to lead the industry with quality work and guaranteed results.

Knowledge and Longevity

With four decades in the trenches you can trust our specialized knowledge. Let our longevity work for you!

Industry Pioneers

We were the first contractors in the GTA to introduce the distinctive overflow underpinning method.

Customer Service

Award winning customer service, quick response times and free estimates make us the perfect fit for your project.

Here For The Long Run

Nearly half a century in business, were in it for the long run. No quick fixes here, only lasting results.

We Love What We Do!

Yes, we truly love what we do! Basement waterproofing, foundation repair and underpinning are our forté!

SINCE 1975

Our Awards

A warranty is only as meaningful as the company that issues it. We don’t simply issue a document, we issue a true guarantee.
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